export declare const INPUT_SIZE_FOR_FEE_CAL = 180;
export declare const OUTPUT_SIZE_FOR_FEE_CAL = 34;
export declare const TX_BUFFER_SIZE_FOR_FEE_CAL = 10;
export declare const ESTIMATED_OP_RETURN_SIZE = 40;
export declare const getEstimatedFee: (feeRate: number, numInputs?: number, numOutputs?: number) => number;